By the way, how does on-site grading works? Are the coins slabbed "on the spot", or just collected for grading later? I may be quite interested in grading a part of my collection, actually. The tide is changing mainland, more and more serious collectors slab their coins now... I already have a PCGS subscription, but only slabbed a few coins for now due to the trouble to send them to the US from Beijing (and the long delay to get them back).

Hmm, does anyone there have experience with Chinese customs policies for sending coins to HK? Technicaly it is a SAR of the PRC, so I guess it does not qualify as exporting cultural artifacts out of the country... But it is much safer to not "guess" if I send a package full of expensive coins. Modern coins collectors are lucky to not have to bother about these regulations!